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Write the name of monomers used for getting the following polymers : Bakelite
Concept: Introduction to Polymers >> Classification of Polymers Based on Structure
Based on molecular forces, what type of polymer is neoprene?
Concept: Introduction to Polymers >> Some Important Polymers
Which of the following is a fibre? Nylon, neoprene, PVC
Concept: Types of Polymerisation Reactions - Condensation Polymerisation Or Step Growth Polymerisation
Write the names and structures of the monomers of the following polymers: Buna-S
Concept: Introduction to Polymers >> Classification of Polymers Based on Mode of Polymerisation
Write the names and structures of the monomers of the following polymers: Dacron
Concept: Introduction to Polymers >> Classification of Polymers Based on Mode of Polymerisation
Write the names and structures of the monomers of the following polymers:
(i) Terylene
(ii) Bakelite
(iii) Buna-S
Concept: Introduction to Polymers >> Classification of Polymers Based on Structure
Arrange the following polymers in increasing order of their intermolecular forces:
Polyvinylchloride, Neoprene, Terylene
Concept: Introduction to Polymers >> Classification of Polymers Based on Molecular Forces
What is the significance of number of 6,6 in the polymer nylon-6,6?
Concept: Types of Polymerisation Reactions - Condensation Polymerisation Or Step Growth Polymerisation
Write a chemical reaction to show that the open structure of D-glucose contains the following :
Straight chain
Concept: Introduction to Polymers >> Classification of Polymers Based on Structure
What is the role of Sulphur in the vulcanization of rubber?
Concept: Types of Polymerisation Reactions - Rubber
Which one of the following is a food preservative?
Equanil, Morphine, Sodium benzoate
Concept: Chemicals in Food - Artificial Sweetening Agents and Food Preservatives
How do antiseptics differ from disinfectants? Give one example of each.
Concept: Therapeutic Action of Different Classes of Drugs - Antimicrobials
Name a substance which can be used as an antiseptic as well as disinfectant.
Concept: Therapeutic Action of Different Classes of Drugs - Antimicrobials
Why is use of aspartame limited to cold foods and drinks?
Concept: Chemicals in Food - Artificial Sweetening Agents and Food Preservatives
Name a sweetening agent used in the preparation of sweets for a diabetic patient.
Concept: Chemicals in Food - Artificial Sweetening Agents and Food Preservatives
Define the following : Narrow spectrum antibiotics
Concept: Classification of Drugs
Seeing the growing cases of diabetes and depression among children, Mr. Chopra, the principal of one reputed school organized a seminar in which he invited parents and principals. They all resolved this issue by strictly banning the junk food in schools and by introducing healthy snacks and drinks like soup, lassi, milk etc. in school canteens. They also decided to make compulsory half an hour physical activities for the students in the morning assembly daily. After six months, Mr. Chopra conducted the health survey in most of the schools and discovered a tremendous improvement in the health of students.
After reading the above passage, answer the following questions :
(i) What are the values (at least two) displayed by Mr. Chopra ?
(ii) As a student, how can you spread awareness about this issue ?
(iii) Why should antidepressant drugs not be taken without consulting a doctor ?
(iv) Give two examples of artificial sweeteners.
Concept: Chemicals in Food - Artificial Sweetening Agents and Food Preservatives
What are anionic detergents? Give an example ?
Concept: Cleansing Agents - Synthetic Detergents
Which one of the following is a disinfectant?
0.2% solution of phenol or 1% solution of phenol
Concept: Therapeutic Action of Different Classes of Drugs - Antacids
What is the difference between agonists and antagonists?
Concept: Drug-target Interaction - Receptors as Drug Targets
